1. The government agency in the United Kingdom that is responsible for internal security and counterintelligence on British territory
   - Security Service [Brit], Military Intelligence Section 5 [Brit]

Type of: international intelligence agency

• Italo Calvino
• Italy
• itch
• itch mite
• itchiness
• itching
• itchy
• itchy feet
• item
• item-by-item
• itemisation
• itemise
• itemization
• itemize
• iter
• iterant
• iterate
• iteration
• iterative
• iterative aspect
• iteratively
• Ithaca
• Ithaki
• Ithiel Town
• Ithunn